001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.commons.compress.harmony.unpack200.bytecode; 018 019import java.io.DataOutputStream; 020import java.io.IOException; 021 022/** 023 * Source file class file attribute 024 */ 025public class SourceFileAttribute extends Attribute { 026 027 private final CPUTF8 name; 028 private int nameIndex; 029 private static CPUTF8 attributeName; 030 031 public static void setAttributeName(final CPUTF8 cpUTF8Value) { 032 attributeName = cpUTF8Value; 033 } 034 035 public SourceFileAttribute(final CPUTF8 name) { 036 super(attributeName); 037 this.name = name; 038 } 039 040 @Override 041 public boolean equals(final Object obj) { 042 if (this == obj) { 043 return true; 044 } 045 if (!super.equals(obj)) { 046 return false; 047 } 048 if (this.getClass() != obj.getClass()) { 049 return false; 050 } 051 final SourceFileAttribute other = (SourceFileAttribute) obj; 052 if (name == null) { 053 if (other.name != null) { 054 return false; 055 } 056 } else if (!name.equals(other.name)) { 057 return false; 058 } 059 return true; 060 } 061 062 /* 063 * (non-Javadoc) 064 * 065 * @see org.apache.commons.compress.harmony.unpack200.bytecode.Attribute#isSourceFileAttribute() 066 */ 067 @Override 068 public boolean isSourceFileAttribute() { 069 return true; 070 } 071 072 @Override 073 protected int getLength() { 074 return 2; 075 } 076 077 @Override 078 protected ClassFileEntry[] getNestedClassFileEntries() { 079 return new ClassFileEntry[] {getAttributeName(), name}; 080 } 081 082 @Override 083 public int hashCode() { 084 final int PRIME = 31; 085 int result = super.hashCode(); 086 result = PRIME * result + ((name == null) ? 0 : name.hashCode()); 087 return result; 088 } 089 090 @Override 091 protected void resolve(final ClassConstantPool pool) { 092 super.resolve(pool); 093 nameIndex = pool.indexOf(name); 094 } 095 096 @Override 097 public String toString() { 098 return "SourceFile: " + name; 099 } 100 101 @Override 102 protected void writeBody(final DataOutputStream dos) throws IOException { 103 dos.writeShort(nameIndex); 104 } 105}